Improvement in apparatus for treating carbonic acid for hardening cement



a. RICHARDSON. A'PPARATUSFOR TREAT:

m CARBONIC ACID FOR mnnwmd CEMENT, m.

Patented. Nov. 30,1875.

N PETERS, PHOTO-UTHOGRAPHER, WASHINGTON. D C.

' ence, with base-burning reservoir A at the amount of air or of oxygen which is admitted,

GEORGE RICHARDSON, 0

IMPROVEMENT IN APPARATUS FOR TREATING CARBONIC ACID FOR HARDE MILWAUKEE, WISCONSIN.

NING CEMENT, &c.

Specification forming part of Letters Patent No. 170,594, dated November 30, 1875; application filed August 8, 1871.

To all whom it may concern:

Be it known that I, GEORGE RICHARDSON, of the city and county of Milwaukee and State of Wisconsin, have invented certain Improvements in Apparatus for Generating Gas for Hardening Cement-Pipes; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the annexed drawings, making a part of this specification, in which the figure shows the ga-sgenerating apparatus; a vessel to contain water or other vaporizing matter, with a pipe for carrying the vapor to the chamber'in which the pipes are to be placed; a pipe for conveying the gas to said chamber; a vessel for containing water for cooling the gas; and the chamber for receiving the pipes while being hardened.

This invention relates to an apparatus for hardening pipes made of earthy matter or of a concrete, by using for such purpose carbonic acid or carbonic oxide, mingled with the vapors of water or other liquids; and it consist-s in the construction and combination of the parts of which it is composed, as will be more fully explained hereinafter.

The apparatus used in practicing my invention is fully shown in the drawing, A representing a furnace in which charcoal or other carbonaceous fuel is burned, it being provided with suitable means for regulating the admission of air or oxygen, and, by prefertop, for the fuel.

When this reservoir is used its cover should bemade to close tight, in order that no gas shall escape at that point.

The fuel burned in this furnace will have its gaseous portions converted into carbonic acid or into carbonic oxide, according tothe it being generally the latter which will be conducted to the chamber 0, 'in which it is to act upon the pipes or other forms of material.

It being a well-known fact that when this gas is admitted to the cooling-chamber in the highly-heated state in which it emerges from the furnace, its effect upon the article thus becomes cooled to the proper temperature before coming in contact with the pipes.

The temperature of the gas may at all times be regulated by causing a small stream of Waterto flow into the vessel B, and out through a pipe or over its edges.

The chamber in which the pipes or other articles are to be cured or hardened, may be made of wood, metal, or of mason-work, the only requisite being that it shall'be gas-tight, or nearly so, in order that the gas and vapor passing therein shall not be wasted.

This chamber may be of any capacity corresponding to the requirementsof the apparatus, but in any event it is to be provided with a close-shutting door or cover, for convenience in putting in and taking out the pipes.

To provide for the mingling of steam or vapor with the gas in the curing-chamber,

there is placed in the upper part of the wall a vessel, D, which may contain water or any other liquid that is easily converted into vapor, or it may contain water and lime,or any other ingredients that will aid in curing or hardening the pipes.

This vessel extends downward into the furnace far enough to receive the proper amount of heat from the burning fuel to convert its contents into vapor or steam gradually, and its upper portion is provided with a pipe, D, which conducts its steam orvapor into the curing-chamber C, where it mingles with the gas, and thus forms the amount of moisture which is necessary for the rapid curing of the p lam aware that heretofore mingled gas and steam havebeen used in a closed chamber for curing or hardening pipes and other articles made of concrete, and hence I do not claim the use of such agents for that purpose.

What I do claim as my invention, and desire to secure by Letters Patent,-is

In an apparatus for hardening or curing PATENT OFFICE,

i2 i 11o,594

m -itifieial v stone, the tarik or' vessel 13, interveiiingibetwe'en the gas-generating fun age A and the iud urati ng-chamber(J, and containing flowing water, in combination with the gas: conducting pipe B, in part; immersed therein, substantially as and for the purpose specified.

In testinri eny whereo f l have name to this specificationjp; the presei ce fe f two subscribin g witnesses.

Witnesses:

D. P. HOLLOWAY, 0. F. CLAUSE-N.

GEO. RI HARDSOX; H i. 

